11787909137 has 2 divisors, whose sum is σ = 11787909138. Its totient is φ = 11787909136.

The previous prime is 11787909041. The next prime is 11787909151. The reversal of 11787909137 is 73190978711.

11787909137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11629249921 + 158659216 = 107839^2 + 12596^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11787909137 is a prime.

It is not a weakly prime, because it can be changed into another prime (11787909737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5893954568 + 5893954569.

It is an arithmetic number, because the mean of its divisors is an integer number (5893954569).

Almost surely, 2^11787909137 is an apocalyptic number.

It is an amenable number.

11787909137 is a deficient number, since it is larger than the sum of its proper divisors (1).

11787909137 is an equidigital number, since it uses as much as digits as its factorization.

11787909137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 666792, while the sum is 53.

The spelling of 11787909137 in words is "eleven billion, seven hundred eighty-seven million, nine hundred nine thousand, one hundred thirty-seven".